Rolling-mill.



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UNITED STATES PATENT OFFICE.

THQMAS S. BLAIR, JR., OF ELMHURST, ILLINOIS.

ROLLING-MILL.

Specification of Letters Patent.

No. 860,896. Patented July 23, 1907. Application filed March 16, 1907. Serial No. 362,762.

To all whom t may concern:

Be it kno n that I, THOMAS S. BLAIR, Ji'. in transit to adapt it to be further 55 of t e United States, residing at Elmhur county of Diipage and State of Illinois have in The primar y object of my invention its to avoid this certain new and useful Improvements iii Rolli ing the work to be fed through the enof which the following is a specification -stands, and back and forth through ily invention relates to certain new and in stands, in uninterrupted or conprovements in rolling-mills and the o tinuous succession, and my invention consists in the vention is to produce adrolling-mill which will have a mechanism I have devised for accomplishing this and much greater capacity than any mill no one in which the billets, blooms or blanks to be r mploy an ordinary roll-stand equipar'e passed through the mill simultaneously and ing-mills, but peculiarly arranged 65 tinuously. er and with stationary, non-reversi- In all rolling mills heretofore k tables which for performing the work to the the roll stands comprise three o rrntage should be modified in particulars of which the prece operated on is s tron hereinafter explained. roll stands it has been necessary accompanying drawings`Figuie l able and reversibly acting feed` f a rolling-mill system showing the anda transfer for each roll-stand les relatively arranged in accordeiating them, cumbersome hydraulic electric or ried form of my invention Fig 2 matic mechanism, which is expensive both to install enlarged view showing the first two rolland maintain. he tables that cooperate with them Fig.

A still more irnpoitant objection is that the opera mmatic section taken at line 3 on Fig l tion of rolling is essentially slow viewed in the direction of the arrow and enlarged that the work in under-goingioll g 4 is an enlarged view in side elevation partly and forth through a plurality of pas two stands and the tables represented each of different roll-stands in the a section taken at the line 5 on 80 ployed, before another piece of wor the direction of the arrow to the action of the same stand. of the machinery employed is, tables on opposite sides of ar'oll-stand have to be brought diagrammatic to avoid unnecessarily to the level of each pass, the one for feeding into it from wings to illustrate detalls the one side and the other' foi receiving the wor sto the feature presented in Fig. 85 emerges fi'om that pass on the opposite side whence onary rollei-tab1es hereinafter det e receiving-table is moved, with the Worl me as that with which itis common to the level of a second pass, through which the wor ls and therefore familiar to those is fed by the rev eise action of the table in the which my invention relates so dnection and emerges upon the first tabl mechanism does not require meantime been moved to the level of th nor description as to details of con to receive therefrom the work Obviously the Ver tically movable feeding tables preclude the l The first 0i' initial roll-stand is represented at l as a use, at one time of more than one roll stand on each three-high-roll stand, with one groove in the pass bepiece of work until the entire rolling operation of that tween the upper and middle rolls indicated at lLL and stand is completed preparatory to transferring the work one groove in the pass between the middle and lower for its further reduction, to the next roll-stand, where rolls, indicated at ll. The second roll-stand, representit is acted upon in the same way, to prepare it for fuied at 2, is similar t0 the stand l and is inline with but ther reduction in another roll-stand; and so on to the somewhat offset from the latter to leave its upper-pass end By this precludirrg the feeding of ingots or groove 2*L iii the line and bring the lower-pass groove 2b 100 blooms in continuous succession to the Erst roll-stand beyond it for' feeding therefrom to the upper-pass delay ensues whrclr materially diminishes the capacrtv groove .':lL of a third roll-stand 3 like the stands l and 2 of the mill, and, moreover, the interruption in feeding and located adjacent to the stand l with its lower-pass is liable, particularly when stoppages occur by reason groove 3b in position to feed toward the upper pass of a of disorganization of the cumbersome machinery refourthy roll-stand 4, placed adjacent to the stand 2 and 105 i jacentto the stand 6, and is shown to at 15 in Fig. 1.

grooves 4L in its upper pass and two grooves 4b in its lower pass.l A iithroll-stand, indicated at 5 in Fig. 1, and like the preceding stands except that it is represented with three 4grooves 5*L Vin its upper pass three grooves 5b in its lower pass, is placed adjacent to the stand 3 in line with a sixth roll-stand, 6, which may be a two-high-roll stand with iour grooves 6a in its pass, as indicated in Fig. 1. A seventh roll-stand, represented at 7 in Fig. 1, having three rolls, with one groove 7 in its upper pass and two grooves 7" in its lower pass, is located adbe endwise coincident with the latter. An eighth roll-stand represented at S in Fig. l, like and located adjacent to the stand 5, is shown to be endwise coincident with the latter, and may be provided with two grooves 8 in its upper pass, and three grooves 8" in its lower pass, as indicated. The relative position'ng oi the roll-stands shown in Fig. l enables the rolls 0i the stand 1 to bey connected by suitable gearing, indicated at 9, with those oi the stand3 or driving the rolls of both stands by the same engine, represented at l0; the rolls of both stands 2 and 4 to be connected by suitable gearing, indicated at 9a, to be driven'by one engine, 11', the rolls oi both stands 6 and 7 to be driven by one engine, 12', and those oi both stands 5 and 8 to be driven by one engine, 13, The ingot to be rolled takes the ollowing-described course, indicated by arrows on Fig. l'. A stationary roll table indicated at 14, and oi the ordinary construction, leads to the 'upper pass oi the roll-stand 1 and is supplied with ingots, as usual, along the larry-track, indicated passes to the section 22 oi said last mentioned table, and by which it is ied into the lower pass 3" oi the stand 3.

table 23 which carries it to the upper pass groove 4 ci the stand 4, and it emerges irom that pass upon a section 24 oi a stationary table irom which it is transferred to the section 25 oi said last mentioned table, by which it is ied into the lower pass groove B4 oi the stand 4.

The delivery-table 26, which leads irom the lowerpass groove 4b to the upper-pass groove 5 in the rollstand 5, may have interposed in it a shearing-device, indicated at 26 oi common construction, ior cutting oii the rear end oi the work, and a similar shearing-device may be interposed in at 2Gb, ior cutting o the orward end oi the work. The table 2G carries the work to the upper-pass groove 5, irom which it emerges upon a table 27 and is transierred to the table 28, which carries it to the lowerpass groove 5b, whence it emerges upon a table 29 to be carried to the upper-pass groove 6 in roll-stand 6. From the last-named pass a table 30 receives the work and delivers it to a table l31 leading to the lower- To all intents and purpass groove 7b in the stand 7.

poses the upper pass oi stand 6 and the lower pass oi stand 7 are upper and lower passes in the same stand, but the two stands are provided because oi the change oi direction required at that point oi the moving work, to avoid unduly lengthening out the system oi rollstands, and, more especially, to avoid objectionable roll-changes. From the pass-groove 7" the work is carried on a table 32 to an upper pass-groove 8 oi stand 8, emerging thereirom upon a table 33 to be delivered upon a table 34 leading to a lower-pass groove 8b oi said stand 8. The work emerges from thepass-groove 8b On the opposite side oi the roll stands 1 provide a supporting table having a supporting section 15 in line with the pass groove 1, and a second supporting section 16 upon a table 35 leading to the upper-pass groove 7 in adapted to feed the piece into the pass groove 1". AS roll-stand 7, and irom the delivery-side oi that pass it is shown, these sections are ormed oi rollers, and are arcarried ofi on a table 36, as to the hot bed.

'upon the receiving section 21 ranged so that a piece can be transferred from a posi- Guides, such as the guide shown at g in Figs. 4 and 5,

tion on thesection l5 to a position on section 1G. are provided, as usual, ior directing the course oi the table 17 takes and leads the work to the upper passwork on the tables irom one pass to another; and, oi groove 2L oi the stand 2. This last-named table has course, the lengths oi the tables vary, increasing in each'oi several oi its rollers nearest the stand l provided succession, to accommodate the increasing length oi on one end with a circular flange or collar rl reaching to the work in its progress. Moreover, as will be underthe line oi ieed through the pass-groove got-turning purpose hereinafter explained. As the work emerges irom the pass-groove 1, it encounters, near one edge-portion, and moves along the peripheries oi the narrow collars r1 in its path until it fully clears and therefore becomes released irom the bite oi the rolls forming that pass; whereupon it turns, by gravity, sidewise with its adjacent side upon the lower surfaces oi the rollers r. Each, or any desired number, oi the succeeding tables, hereinafter mentioned, may be provided, near their delivery-ends, like the table 17, with a set oi collars r to produce automatically, in the manner described, this required turning betweenroll-stands, oi the work being rolled.

On the other side oi the stand is provided a stationary roller table composed oi a receiving section 18 in line with'the upper pass groove 2, and a eeding section 19 in line with the lower pass groove 2l. From the lower pass groove 2b another roller table 2() leads to the upper pass groove 3YL oi the roll stand 3, the work emerging oi a table irom which it stood, the system oi roll-stands and stationary tables may be curtailed or extended according to requirement for particular work.

The work leaves the upper pass oi roll-stand No. 3 as a billet, and instead ot running all billets through the succeeding roll-stands, alternate billets may be run ofi, over an extension 24EL oi the table 22, to be rolled in a billet-mill, which is not shown, but involves substantially the same arrangement, as to mechanism, as that shown and described oi the rolling-mill. Y

From the ioregoing, it will be seen that my invention involves a mechanism or passing the work initially through a pass oi the first roll-stand and thence uninterruptedly through the entire Vroll-system, thereby rendering the operation con inuous irom beginning to end, with the advantages oi avoiding delay, removing all need oi re-heating the work, and greatly simpliyng the rolling-mill equipment.

While l have described what l believe to be the preyention, l desire to have it underierred form oi my 1n stood that many changeszmay be made in the'liorm,

From this last named pass the work emerges upon the kits construction and arrangement of parts Without depart- To stand having an upper am? a lower pass or'tin table arranfed in Workin osition relative to the ing from the spirit of my invention. D g a g p What I claiin is new and desire to secure by Letters Patent is:

ing a supporting Working position relative to 1 In a 011mg mm the Combination with a* ou Stand tie upper pass and a supporting portion 1n working posihaving an upper and a lower pass, @first Supprug table tion relative to the owei pass, the said supporting p0rziri'anged in working position can be passed in one directhrouuh the other of the passes, and both pieces he prop- Ppel passi a G ODDOS@ 01.1), Supported by the respective Supportmg membels. side of the rolls troni the-first. table, the said second table 2 u a polling mju the a 1.0M Stand having a supportingJ portion in woihing position relative ed and arranged so to pelmit a piece bemg Opemted same side of the rolls :is the first table but in a working upon to he transferred fiom a position on one supporting Dosltlou relative to the 10W@ Dass the tables befug Sta" Ummm to a position Whew 1t can be Suppolted by the tionaiy and constructed and arranged so that a piece can a second the saine time through the other THOMAS s' BLAIR! JIL pieces bc propeilv supported by Witnesses: the respective supporting ineinbe s. A. U. THORIEN, 2.. In u rolling mill the combination with a three hiffh W. B. DAvrns. 

